Talk about a loaded question
Usually high value trees are in landscaped areas that are being fertilized on a regular basis anyways. The residual fertilizer makes it way to the trees. If the tree is healthy and looking good why take the chance of messing that up? If it is a high value tree that is in the middle of a parking lot then I might consider a spring feeding every year but then again if it is healthy and growing well it really isn't lacking anything so why mess with it?
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Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways - Beer in one hand - Nacho's in the other - body thoroughly used up, totally worn out and screaming : Woo Hoo, what a ride!